I design data systems that amplify decision-making without breaking budgets or requiring black boxes. Data Architect at First 5 Alameda County, previously four years building data infrastructure, analytics, and AI systems at TalkingPoints. Also developing Relod and publishing lessons learned at tacosdedatos.
This week: Starting as Data Architect at First 5 Alameda County. Wrapping up an intense content sprint—four live streams in two weeks, each going from zero to a deployed data story site in ~2 hours using Claude Code. Now channeling those sessions into two guides: Storytelling con Datos (visual communication in Spanish) and Tu Primer Agente AI (building an AI collaborator that actually remembers you). Tacos de Datos hit ~1,800 subscribers and its first paid subscriber.
Senior Data Engineer — EdTech platform that connected millions of multilingual families with schools
Modernized data stack, cut costs 70%
read more →Built BI for 200+ districts
read more →API for attendance product
read more →Connected Salesforce, PlanHat+
read more →Quantified attendance impact
read more →Evaluation systems at scale
read more →ESP32 sensors + consumption forecasting for food businesses. Know when to reorder before you run out. Currently piloting with San Francisco/Berkeley cafés and bars. The physics are simple (distance sensors); the behavioral patterns are not. Accepted to Founders Inc.
Spanish-language newsletter and community focused on AI and data. 20K+ followers, 1100+ active members. Weekly posts on AI Ops, practical implementations, and emerging tools for the Latin American tech community. Building accessible technical content where language isn't a barrier.
A frictionless journaling system for capturing insights. Kishmish: headless Raspberry Pi running on-device AI for voice transcription, entity extraction, and intent analysis. No screen to distract, works offline-first. Amoxcalli: companion app that highlights patterns and connections across entries. Currently testing v0.4 hardware with PiSugar battery.
AI-powered lesson design workbench where educators assemble lesson blocks with persona vibes, tone/time/materials tags, and post-lesson reflections. Draggable flow interface with suggestion column and component remix capabilities.
Agentic career development system that lives in your terminal. Tracks progress through git commits, provides daily check-ins, and delivers personalized coaching both locally and via ChatGPT integration. Command-line tool for continuous professional growth tracking.
I build data systems that help people make better decisions. As Data Architect at First 5 Alameda County, I'm bringing AI operations and data infrastructure experience to early childhood education programs. Previously at TalkingPoints, where I built infrastructure that processed billions of messages between families and schools. On the side, I'm developing Relod—an IoT operations co-pilot for small businesses—and live streaming data analysis sessions that go from zero to deployed project in two hours.
I write about data engineering and AI operations in Spanish through tacosdedatos (~1,800 subscribers), and I'm writing guides on data storytelling and building AI collaborators. I also coach and tutor on using AI tools like Claude Code for data analysis. I believe AI should extend human judgment, not replace it—everything I build is about amplifying our natural capabilities rather than automating them away.
My north star is simple: amplify people's agency, especially for communities that have been historically underserved. Whether it's helping educators reach multilingual families, enabling small businesses with better operations, or making technical knowledge accessible beyond English borders, I focus on shipping small, useful things that solve real problems. I believe cost-effectiveness is the real test of any solution—throwing money at a problem doesn't make it better, just more expensive. If you value pragmatic approaches, transparent systems, and tools that empower rather than restrict, we'll probably work well together.
Optimistic realism—progress in small slices
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Automatic with override
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Personalized with consent > generic for everyone
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Tools augment, not replace
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Sustainability matters
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Empowering over restricting
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Access means everyone.
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Diagnose with data, treat with design
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Great design is felt
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Open to consulting, coaching on AI tools for data work, speaking (EN/ES), and conversations about what's next.
Or reach out directly: sergio@cimarron.io